TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in its Atmosphere
Samuel H. C. Cabot, Aaron Bello-Arufe, João M. Mendonça, René Tronsgaard, Ian Wong, George Zhou, Lars A. Buchhave, Debra A. Fischer, Keivan G. Stassun, Victoria… 展开作者
Samuel H. C. Cabot, Aaron Bello-Arufe, João M. Mendonça, René Tronsgaard, Ian Wong, George Zhou, Lars A. Buchhave, Debra A. Fischer, Keivan G. Stassun, Victoria Antoci, David Baker, Alexander A. Belinski, Björn Benneke, Luke G. Bouma, Jessie L. Christiansen, Karen A. Collins, Maria V. Goliguzova, Simone Hagey, Jon M. Jenkins, Eric L. N. Jensen, Richard C. Kidwell, Didier Laloum, Bob Massey, Kim K. McLeod, David W. Latham, Edward H. Morgan, George Ricker, Boris S. Safonov, Joshua E. Schlieder, Sara Seager, Avi Shporer, Jeffrey C. Smith, Gregor Srdoc, Ivan A. Strakhov, Guillermo Torres, Joseph D. Twicken, Roland Vanderspek, Michael Vezie, Joshua N. Winn
We present the discovery of TOI-1518b -- an ultra-hot Jupiter orbiting a bright star $V = 8.95$. The transiting planet is confirmed using high-resolution optical transmission spectra from EXPRES. It is inflated, with $R_p = 1.875\pm0.053\,R_{\rm J}$, and exhibits several interesting properties, including a misaligned orbit (${240.34^{+0.93}_{-0.98}}$ degrees) and nearly grazing transit ($b =0.9036^{+0.0061}_{-0.0053}$). The planet orbits a fast-rotating F0 host star ($T_{\mathrm{eff}} \simeq 7300$ K) in 1.9 days and experiences intense irradiation. Notably, the TESS data show a clear secondary eclipse with a depth of $364\pm28$ ppm and a significant phase curve signal, from which we obtain a relative day-night planetary flux difference of roughly 320 ppm and a 5.2$σ$ detection of ellipsoidal distortion on the host star. Prompted by recent detections of atomic and ionized species in ultra-hot Jupiter atmospheres, we conduct an atmospheric cross-correlation analysis. We detect neutral iron (${5.2σ}$), at $K_p = 157^{+68}_{-44}$ km s$^{-1}$ and $V_{\rm sys} = -16^{+2}_{-4}$ km s$^{-1}$, adding another object to the small sample of highly irradiated gas-giant planets with Fe detections in transmission. Detections so far favor particularly inflated gas giants with radii $\gtrsim 1.78\,R_{\rm J}$; although this may be due to observational bias. With an equilibrium temperature of $T_{\rm eq}=2492\pm38$ K and a measured dayside brightness temperature of $3237\pm59$ K (assuming zero geometric albedo), TOI-1518b is a promising candidate for future emission spectroscopy to probe for a thermal inversion.
TOI-3664 b, TOI-4034 b & TOI-6564 b: Three new hot Jupiters around stars approaching the terminal age main sequence
Queen Mary University of London（伦敦大学玛丽女王学院）；Observatoire Astronomique de l’Université de Genève（日内瓦大学天文台）；University of Warwick（华威大学）；Leiden University（莱顿大学）；Universidad Politécnica de Madrid（马德里理工大学）；Universidade do Porto（波尔图大学）
HARPS-N Reveals a Well-aligned Orbit for the Highly Eccentric Warm Jupiter TOI-4127 b
The University of New Mexico（新墨西哥大学）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理研究所）；Universidad de La Laguna (ULL)（拉帕鲁纳大学）；Center for Computational Astrophysics, Flatiron Institute（平顿研究所计算天体物理学中心）；University of Illinois at Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；INAF – Osservatorio Astrofisico di Torino（意大利国家天体物理研究所都灵天文台）
The low density, hot Jupiter TOI-640 b is on a polar orbit
TOI-640 b是一颗热而膨胀的木星，质量为$0.57 \pm 0.02$ M $_{\rm J}$，半径为$1.72 \pm 0.05$ R $_{\rm J}$，围绕一颗稍微演化的F型恒星运行，距离为$6.33^{+0.07}_{-0.06}$ R $_\star$。通过使用HARPS摄谱仪进行的光谱在途观测，我们测量了Rossiter-McLaughlin效应，分析了在途径向速度和恒星光谱线的畸变。从这些观测中，我们发现主星的投影折射率为$λ=184\pm3^\circ$。从TESS光变曲线中，我们测量了恒星的自转周期，从而确定了恒星倾角$i_\star=23^{+3\circ}_{-2}$，这意味着我们看到的是恒星的极点。结合轨道倾角，我们可以计算出主星的平行度$ψ=104\pm2^\circ$。TOI-640 b加入了一组在$80^\circ-125^\circ$范围内绕恒星两极运行的行星。这种轨道结构的起源还不很清楚。
Discovery and Characterization of the TOI-4468 Planetary System: A Transiting Hot Jupiter With a Lone Nearby Outer Companion
University of Wisconsin–Madison（威斯康星大学麦迪逊分校）；NASA Goddard Space Flight Center（NASA戈达德太空飞行中心）；Center for Astrophysics | Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；Michigan State University（密歇根州立大学）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内科克天文学研究所）；ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所ASTRON）；Centre for Astrophysics, University of Southern Queensland（南昆士兰大学天体物理学中心）；Astrophysics & Space Institute, Schmid（施密德天体物理学与空间研究所）
The 35-Myr old infant planet TOI-837 b has a mildly misaligned orbit
Centro di Ateneo di Studi e Attività Spaziali “G. Colombo” – Università degli Studi di Padova（帕多瓦大学太空研究与活动中心“G. Colombo”）；INAF – Osservatorio Astronomico di Padova（意大利国家天体物理研究所帕多瓦天文台）；Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università di Padova（帕多瓦大学伽利略·伽利雷物理与天文学系）；Dipartimento di Fisica e Astronomia, Università di Padova（帕多瓦大学物理与天文学系）；INAF – Osservatorio Astrofisico di Catania（意大利国家天体物理研究所卡塔尼亚天文台）；INAF – Osservatorio Astronomico di Brera（意大利国家天体物理研究所布雷拉天文台）；INAF – Osservatorio Astronomico di Palermo（意大利国家天体物理研究所巴勒莫天文台）；INAF – Osservatorio Astrofisico di Torino（意大利国家天体物理研究所都灵天文台）
CAFE follow-up of TESS hot Jupiter candidates left behind: I. Five newly confirmed planets and a false positive
Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森尼天体物理中心）；NASA Exoplanet Science Institute-Caltech/IPAC（NASA系外行星科学研究所-加州理工学院/IPAC）；Institut d’astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie（巴黎天体物理学研究所，CNRS UMR7095，皮埃尔和玛丽·居里大学）；Observatoire de Haute-Provence（上普罗旺斯天文台）；Department of Physics & Astronomy, University of California Los Angeles（加州大学洛杉矶分校物理与天文学系）；Thüringer Landessternwarte Tautenburg（图林根州陶滕堡天文台）；Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux, CNRS（波尔多天体物理学实验室，波尔多大学，CNRS）；Institut universitaire de France (IUF)（法国大学学院）；Department of Astrophysical Sciences, Princeton University（普林斯顿大学天体物理科学系）；NASA Ames Research Center（NASA艾姆斯研究中心）
PEPSI Investigation, Retrieval, and Atlas of Numerous Giant Atmospheres (PIRANGA). I. The Ubiquity of Fe I Emission and Inversions in Ultra Hot Jupiter Atmospheres
本文利用 PEPSI 光谱仪对两颗超热木星进行高分辨率观测，探测到 Fe I 等发射线，证明其大气普遍存在逆温层，并提出原子铁是主导光学不透明度来源。
Discovery of an Eccentric Hot Super-Jupiter Leaving the Transiting Geometry of the Early-A-type star TOI-1355
The University of Tokyo（东京大学）；Komaba Institute for Science, The University of Tokyo（东京大学小柴科学研究所）；Astrobiology Center（天体生物学中心）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理研究所）；Department of Earth and Planetary Sciences, Institute of Science Tokyo（东京科学地球行星科学学院）；Okayama Observatory, Kyoto University（京都大学冈山天文台）
TOI-2147 b and TOI-6019 b: Two eccentric warm Jupiters detected and characterized with TESS and MaHPS
Ludwig-Maximilians-Universität München（慕尼黑大学）；Max-Planck Institute for Extraterrestrial Physics（马克斯·普朗克地外物理研究所）；European Southern Observatory (ESO)（欧洲南方天文台）；Lund University（隆德大学）
SOPHIE and TESS characterization of fourteen TESS Objects of Interest: nine planetary systems and five low-mass stellar companions
Institut d’astrophysique de Paris, UMR 7095 CNRS université pierre et marie curie（巴黎天体物理研究所）；Observatoire de Haute-Provence, CNRS, Université d’Aix-Marseille（上普罗旺斯天文台）；Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto（葡萄牙大学空间与天体物理研究所）；Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto（波尔图大学理学院物理与天文系）；Univ. Grenoble Alpes, CNRS, IPAG（格勒诺布尔阿尔卑斯大学）；LIRA, Université Paris Cité, Observatoire de Paris, Université PSL, Sorbonne Université, CY Cergy Paris Université, CNRS（巴黎西岱大学/巴黎天文台/巴黎文理研究大学/索邦大学/塞吉-蓬瓦兹大学）；Center for Astrophysics | Harvard & Smithsonian（哈佛-史密森天体物理中心）；Observatoire de Genève, Université de Genève（日内瓦大学天文台）；Sternberg Astronomical Institute of Lomonosov M（罗蒙诺索夫莫斯科国立大学斯滕伯格天文研究所）
Searching for GEMS: Three warm Saturns and a super-Jupiter orbiting four early M-dwarfs
University of California, Irvine（加州大学尔湾分校）；Carnegie Institution for Science（卡内基科学机构）；Southeastern Universities Research Association（东南大学研究协会）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）
A Pair of Warm Saturn-mass Planets near the 2:1 Mean Motion Resonance around TOI-3850
University of British Columbia（不列颠哥伦比亚大学）；McGill University（麦吉尔大学）；Vanderbilt University（范德堡大学）；NASA Ames Research Center（美国宇航局艾姆斯研究中心）；University of Chicago（芝加哥大学）；Gemini Observatory/NSF NOIRLab（吉米天文台/美国国家光学红外天文研究实验室）
